Jackhammer
device · 1871 · Electric age
A percussion tool driven by compressed air.
Inventor: Charles Brady King.
What it is made of
- Piston — has part. A percussion piston.
Principles and materials it uses
- Compressed air — uses. Compressed air.
- Steel — is made of. The hammer and point are steel.
History: what it evolved from and what it influenced
- Rock drill — evolved from. A hand-held pneumatic tool.